* {
    margin: 0;
    padding: 0;
}

body {
    background-image: url(../../assets/img/index.png);
    background-size: cover;
}

.btn_area {
    height: 100px;
    width: 100px;
    float: right;
    margin-top: 30px;
    margin-right: 70px;
}

.tuanzi {
    width: 180px;
    height: 100px;
    float: right;
    position: absolute;
    right: 20px;
    bottom: 20px;
}